FR2374791A1 - RECEIVER FOR ELECTRIC OSCILLATIONS MODULATED FOLLOWING THE TECHNIQUE OF MULTIPLE ACCESS TO THE DISPERSION SPECTRUM - Google Patents
RECEIVER FOR ELECTRIC OSCILLATIONS MODULATED FOLLOWING THE TECHNIQUE OF MULTIPLE ACCESS TO THE DISPERSION SPECTRUMInfo
- Publication number
- FR2374791A1 FR2374791A1 FR7135280A FR7135280A FR2374791A1 FR 2374791 A1 FR2374791 A1 FR 2374791A1 FR 7135280 A FR7135280 A FR 7135280A FR 7135280 A FR7135280 A FR 7135280A FR 2374791 A1 FR2374791 A1 FR 2374791A1
- Authority
- FR
- France
- Prior art keywords
- receiver
- technique
- multiple access
- dispersion spectrum
- electric oscillations
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
- H03G3/3073—Circuits generating control signals when no carrier is present, or in SSB, CW or pulse receivers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0001—Circuit elements of demodulators
- H03D2200/0025—Gain control circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D2200/00—Indexing scheme relating to details of demodulation or transference of modulation from one carrier to another covered by H03D
- H03D2200/0001—Circuit elements of demodulators
- H03D2200/0031—PLL circuits with quadrature locking, e.g. a Costas loop
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
Abstract
a. L'invention concerne un récepteur pour oscillations électriques modulées suivant la technique d'accès multiple au spectre de dispersion, un multiplicateur étant prévu pour un signal à fréquence intermédiaire. b. Ce récepteur est caractérisé en ce qu'un amplificateur de régulation est prévu dans la section de récepteur précédant le multiplicateur. c. L'invention est principalement applicable dans les transmissions par satellites.at. The invention relates to a receiver for modulated electrical oscillations according to the technique of multiple access to the dispersion spectrum, a multiplier being provided for an intermediate frequency signal. b. This receiver is characterized in that a regulating amplifier is provided in the receiver section preceding the multiplier. vs. The invention is mainly applicable in satellite transmissions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2048056A DE2048056C1 (en) | 1970-09-30 | 1970-09-30 | Receiver for electrical oscillations modulated in SSMA technology |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2374791A1 true FR2374791A1 (en) | 1978-07-13 |
Family
ID=5783798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7135280A Withdrawn FR2374791A1 (en) | 1970-09-30 | 1971-09-30 | RECEIVER FOR ELECTRIC OSCILLATIONS MODULATED FOLLOWING THE TECHNIQUE OF MULTIPLE ACCESS TO THE DISPERSION SPECTRUM |
Country Status (7)
Country | Link |
---|---|
US (1) | US4123718A (en) |
CA (1) | CA1041234A (en) |
DE (1) | DE2048056C1 (en) |
FR (1) | FR2374791A1 (en) |
GB (1) | GB1502253A (en) |
IT (1) | IT1019515B (en) |
NL (1) | NL155143B (en) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS588771B2 (en) * | 1977-01-25 | 1983-02-17 | 三洋電機株式会社 | Preset tuner |
US4285060A (en) * | 1978-02-28 | 1981-08-18 | Harris Corporation | Spread spectrum code tracking loop |
DE2854832C2 (en) * | 1978-12-19 | 1980-11-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Receiving circuit in an interference-suppressing message transmission system with narrow-band conventional message modulation and additional pseudo-random phase-shift modulation |
JPS5737905A (en) * | 1980-08-14 | 1982-03-02 | Toshiba Corp | Envelope curve wave detecting circuit |
JPS5793704A (en) * | 1980-12-03 | 1982-06-10 | Alps Electric Co Ltd | Fm demodulation circuit |
US4542347A (en) * | 1982-03-30 | 1985-09-17 | International Standard Electric Corporation | Demodulator circuit with integrated automatic gain control |
FR2533095A1 (en) * | 1982-09-09 | 1984-03-16 | Europ Agence Spatiale | METHOD AND DEVICE FOR DEMODULATING A PHASE-MODIFIED CARRIER WAVE BY A SUB-CARRIER WAVE WHICH IS MODULATED IN PHASE DISPLACEMENT BY BASEBAND SIGNALS |
AU593564B2 (en) * | 1985-07-24 | 1990-02-15 | Nec Corporation | Spread spectrum power line communications |
US4901307A (en) * | 1986-10-17 | 1990-02-13 | Qualcomm, Inc. | Spread spectrum multiple access communication system using satellite or terrestrial repeaters |
DE3808328C1 (en) * | 1988-03-12 | 1989-06-29 | Standard Elektrik Lorenz Ag, 7000 Stuttgart, De | |
US5485486A (en) * | 1989-11-07 | 1996-01-16 | Qualcomm Incorporated | Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system |
US5265119A (en) * | 1989-11-07 | 1993-11-23 | Qualcomm Incorporated | Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system |
US5257283A (en) * | 1989-11-07 | 1993-10-26 | Qualcomm Incorporated | Spread spectrum transmitter power control method and system |
US5056109A (en) * | 1989-11-07 | 1991-10-08 | Qualcomm, Inc. | Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system |
US5267262A (en) * | 1989-11-07 | 1993-11-30 | Qualcomm Incorporated | Transmitter power control system |
US6157668A (en) * | 1993-10-28 | 2000-12-05 | Qualcomm Inc. | Method and apparatus for reducing the average transmit power of a base station |
ZA948134B (en) * | 1993-10-28 | 1995-06-13 | Quaqlcomm Inc | Method and apparatus for performing handoff between sectors of a common base station |
ZA948133B (en) * | 1993-10-28 | 1996-05-17 | Qualcomm Inc | Method and apparatus for reducing the average transmit power from a sectorized base station |
US5822318A (en) * | 1994-07-29 | 1998-10-13 | Qualcomm Incorporated | Method and apparatus for controlling power in a variable rate communication system |
US5933787A (en) * | 1995-03-13 | 1999-08-03 | Qualcomm Incorporated | Method and apparatus for performing handoff between sectors of a common base station |
US6137840A (en) * | 1995-03-31 | 2000-10-24 | Qualcomm Incorporated | Method and apparatus for performing fast power control in a mobile communication system |
TW347616B (en) * | 1995-03-31 | 1998-12-11 | Qualcomm Inc | Method and apparatus for performing fast power control in a mobile communication system a method and apparatus for controlling transmission power in a mobile communication system is disclosed. |
US6977967B1 (en) | 1995-03-31 | 2005-12-20 | Qualcomm Incorporated | Method and apparatus for performing fast power control in a mobile communication system |
US6021122A (en) | 1996-06-07 | 2000-02-01 | Qualcomm Incorporated | Method and apparatus for performing idle handoff in a multiple access communication system |
US5893035A (en) * | 1996-09-16 | 1999-04-06 | Qualcomm Incorporated | Centralized forward link power control |
US5960361A (en) * | 1996-10-22 | 1999-09-28 | Qualcomm Incorporated | Method and apparatus for performing a fast downward move in a cellular telephone forward link power control system |
US6075974A (en) * | 1996-11-20 | 2000-06-13 | Qualcomm Inc. | Method and apparatus for adjusting thresholds and measurements of received signals by anticipating power control commands yet to be executed |
USRE39177E1 (en) * | 1997-01-29 | 2006-07-11 | Qualcomm, Inc. | Method and apparatus for performing soft hand-off in a wireless communication system |
US6151502A (en) * | 1997-01-29 | 2000-11-21 | Qualcomm Incorporated | Method and apparatus for performing soft hand-off in a wireless communication system |
US5933781A (en) * | 1997-01-31 | 1999-08-03 | Qualcomm Incorporated | Pilot based, reversed channel power control |
US5987326A (en) * | 1997-02-11 | 1999-11-16 | Qualcomm Incorporated | Transmit power reduction for a high speed CDMA link in soft handoff |
US5991284A (en) * | 1997-02-13 | 1999-11-23 | Qualcomm Inc. | Subchannel control loop |
US6396867B1 (en) | 1997-04-25 | 2002-05-28 | Qualcomm Incorporated | Method and apparatus for forward link power control |
US6002933A (en) * | 1997-04-29 | 1999-12-14 | Qualcomm Incorporated | Inter-system soft handoff |
US5982760A (en) * | 1997-06-20 | 1999-11-09 | Qualcomm Inc. | Method and apparatus for power adaptation control in closed-loop communications |
US6426960B2 (en) | 1997-06-24 | 2002-07-30 | Qualcomm Incorporated | Increased capacity data transmission in a CDMA wireless communication system |
US6055428A (en) * | 1997-07-21 | 2000-04-25 | Qualcomm Incorporated | Method and apparatus for performing soft hand-off in a wireless communication system |
US6188678B1 (en) | 1997-08-07 | 2001-02-13 | Qualcomm Inc. | Method and apparatus for adaptive closed loop power control using open loop measurements |
US6147981A (en) * | 1997-08-07 | 2000-11-14 | Qualcomm Incorporated | Method and apparatus for predictive parameter control with loop delay |
US6070085A (en) * | 1997-08-12 | 2000-05-30 | Qualcomm Inc. | Method and apparatus for controlling transmit power thresholds based on classification of wireless communication subscribers |
US6097972A (en) * | 1997-08-29 | 2000-08-01 | Qualcomm Incorporated | Method and apparatus for processing power control signals in CDMA mobile telephone system |
US6215777B1 (en) | 1997-09-15 | 2001-04-10 | Qualcomm Inc. | Method and apparatus for transmitting and receiving data multiplexed onto multiple code channels, frequencies and base stations |
US6512925B1 (en) | 1998-12-03 | 2003-01-28 | Qualcomm, Incorporated | Method and apparatus for controlling transmission power while in soft handoff |
US6690938B1 (en) | 1999-05-06 | 2004-02-10 | Qualcomm Incorporated | System and method for reducing dropped calls in a wireless communications network |
US6351460B1 (en) | 1999-05-24 | 2002-02-26 | Qualcomm Incorporated | Method and apparatus for a dedicated control channel in an early soft handoff in a code division multiple access communication system |
US8199696B2 (en) | 2001-03-29 | 2012-06-12 | Qualcomm Incorporated | Method and apparatus for power control in a wireless communication system |
US6766153B2 (en) | 2001-04-02 | 2004-07-20 | Itran Communications Ltd. | Dynamic automatic gain control circuit employing kalman filtering |
DE10229459C1 (en) * | 2002-07-01 | 2003-11-13 | Texas Instruments Deutschland | Transponder for contactless data transmission system has regulation circuit for preventing variation in voltage level of input signal fed from antenna to demodulator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3470480A (en) * | 1965-12-29 | 1969-09-30 | Int Standard Electric Corp | Digital counter controlled automatic gain regulator employing pilot signal |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3210667A (en) * | 1962-12-10 | 1965-10-05 | Collins Radio Co | F.m. synchronous detector system |
US3706933A (en) * | 1963-09-17 | 1972-12-19 | Sylvania Electric Prod | Synchronizing systems in the presence of noise |
US3376514A (en) * | 1965-12-21 | 1968-04-02 | Collins Radio Co | Encoded synchronous demodulator circuit |
US3617892A (en) * | 1967-02-27 | 1971-11-02 | Rca Corp | Frequency modulation system for spreading radiated power |
US3478268A (en) * | 1967-06-16 | 1969-11-11 | Sylvania Electric Prod | Suppression of strong interfering signals in a radio receiver |
NL6908782A (en) * | 1969-06-10 | 1970-12-14 | ||
US3678393A (en) * | 1970-09-30 | 1972-07-18 | Bell Telephone Labor Inc | Automatic gain control having a fast broadband attack mode and a slow narrow band receive mode |
-
1970
- 1970-09-30 DE DE2048056A patent/DE2048056C1/en not_active Expired
-
1971
- 1971-07-28 GB GB35548/71A patent/GB1502253A/en not_active Expired
- 1971-09-13 NL NL717112541A patent/NL155143B/en unknown
- 1971-09-15 IT IT28699/71A patent/IT1019515B/en active
- 1971-09-27 US US05/184,238 patent/US4123718A/en not_active Expired - Lifetime
- 1971-09-30 CA CA124,047A patent/CA1041234A/en not_active Expired
- 1971-09-30 FR FR7135280A patent/FR2374791A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3470480A (en) * | 1965-12-29 | 1969-09-30 | Int Standard Electric Corp | Digital counter controlled automatic gain regulator employing pilot signal |
Non-Patent Citations (1)
Title |
---|
PROCEEDINGS OF THE IEEE, vol. 54, no. 5, mai 1966, New York (US), J.W. SCHWARTZ et al.. 'Modulation techniques for multiple access to a hard-limiting satellite repeater', pages 763 - 777 * |
Also Published As
Publication number | Publication date |
---|---|
GB1502253A (en) | 1978-03-01 |
CA1041234A (en) | 1978-10-24 |
NL155143B (en) | 1977-11-15 |
DE2048056C1 (en) | 1978-10-19 |
IT1019515B (en) | 1977-11-30 |
US4123718A (en) | 1978-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |